EP 0296679 A1 19881228 - Copying apparatus for copying a magnetic pattern from a master magnetic tape on a duplicate magnetic tape and method of operating such a copying apparatus.
Title (en)
Copying apparatus for copying a magnetic pattern from a master magnetic tape on a duplicate magnetic tape and method of operating such a copying apparatus.
Title (de)
Kopiergerät zum Kopieren eines magnetischen Modells von einem magnetischen Mutter-Band auf ein magnetisches Duplikat-Band und Verfahren zum Betreiben eines solchen Kopiergerätes.
Title (fr)
Appareil pour copier un modèle magnétique à partir d'une bande mère magnétique sur une autre bande magnétique et méthode d'exploitation d'un tel appareil pour copier.
Publication
Application
Priority
NL 8701477 A 19870625
Abstract (en)
A copying apparatus (1) for copying a magnetic pattern from a master magnetic tape (5) on a duplicate magnetic tape (6) comprises two facing elongate platens (9, 10) having mutually parallel gap sides (9A, 10A) which bound a gap (13). Copying means (20) are provided to promote the signal transfer from the master to the duplicate magnetic tape. In the gap sides (9A, 10A7 of the platens (9, 10) passages (18) are arranged, through which passages a pressurized fluid is fed into the gap (13), so that the tapes are intimately pressed against one another inside the gap (13). In the gap sides (9A, 10A) expulsion means (16A, 10E, 10K, 23) are provided to expel air present between the tapes, the expulsion means in each gap side, in a view at said gap side, being arranged in at least one V-shape having an axis of symmetry which extends substantially parallel to the longitudinal direction of the platens (9, 10), at least a number of said passages being situated within the outline of the V-shape.
IPC 1-7
IPC 8 full level
G11B 5/86 (2006.01)
CPC (source: EP KR US)
G11B 5/86 (2013.01 - KR); G11B 5/865 (2013.01 - EP US)
Citation (search report)
- [A] US 3752925 A 19730814 - SMALER P
- [A] US 3573390 A 19710406 - FROST WILLIAM T, et al
- [A] US 3544732 A 19701201 - BAUER RICHARD A, et al
- [A] JOURNAL OF THE SMPTE, vol. 78, no. 9, September 1969, pages 709-711, Scarsdale, US; R.J. VAN DEN BERG: "The design of a machine for high-speed duplication of video records"
- [A] JOURNAL OF THE SMPTE, vol. 80, no. 3, March 1971, pages 177-178, Scarsdale, US; J.E. DICKENS et al.: "Thermoremanent duplication of magnetic tape recordings"
- [A] IBM TECHNICAL DISCLOSURE BULLETIN, vol. 10, no. 11, April 1968, pages 1710-1711, New York, US; R.E. MARRS: "Sink to control noise in an externally pressurized air bearing"
Designated contracting state (EPC)
DE FR GB IT NL
DOCDB simple family (publication)
EP 0296679 A1 19881228; EP 0296679 B1 19920422; DE 3870329 D1 19920527; HK 127593 A 19931126; JP 2678236 B2 19971117; JP S6423421 A 19890126; KR 890001031 A 19890317; KR 960013001 B1 19960925; NL 8701477 A 19890116; US 4882637 A 19891121
DOCDB simple family (application)
EP 88201259 A 19880617; DE 3870329 T 19880617; HK 127593 A 19931118; JP 15604588 A 19880625; KR 880007581 A 19880623; NL 8701477 A 19870625; US 20912888 A 19880617